$0@ LAKE SUPERIOR. 



oblique wavy bands, and are ornamented with two silvery white spots 

 near the base, at the inner angles of the discoidal cells ; the anterior 

 spot being round and the posterior and larger one triangular. The 

 hindwings are Ught ashen brown at base, passing into dusky ochre- 

 yellow. The large specimen is a female, and was taken by Profes- 

 sor Agassiz on the northern shore of Lake Superior. The body 

 is of a dusky ochre-yellow color, tinged on the sides and on the legs 

 with red. The forewings are Ught rosy buif, with brownish ochre 

 clouds and bands, two silvery spots near the base, and a whitish dot 

 near the tip. The hindwings, above, and all the wings beneath, are 

 of a deep ochre-yellow color, tinged with red. 



The empty pupa-skins of this or of an alUed species are sometimes 

 found on our sea-beaches. 



Arctia Parthenos H. 

 PI. VII., fig. 4. 



Alis primoribus fusco-brunneis, maculis sparsis lactifloreis ; secun- 

 dariis fulvo-flavis, basi, macula media triangulari, fasciaque postica 

 undata nigris ; abdomine supra fusco apice fulvo. 



Alar. exp. unc. 2J. 



Head brown, with a crimson fringe above and between the black 

 antennae. Thorax brown above, margined before with an arcuated 

 cream-colored band, which is continued on each side of the outer 

 edge of the shoulder-covers ; upper edge of the collar crimson-red. 

 Forewings dusky brown, with three small cream-colored spots on the 

 outer edge ; four spots of the same color in a line near the inner 

 margin, and several more scattered on the disk. Hindwings deep 

 ochre-yellow, with the base, the basal edge of the inner margin, a 

 triangular spot in the middle, adjoining the basal spot, and a broad 

 indented band behind, of a black color. Abdomen dusky above, 

 tawny at tip and beneath. Legs dusky, thighs and tibias fringed 

 with crimson-red hairs. 



This fine species was taken on the northern shore of Lake Supe- 

 rior. It belongs to the same group as the European Caja, from all the 



